Backflow Complete Assemblies

Backflow preventer assemblies serve a critical role in upholding water supply purity. These devices are strategically installed on water lines to thwart any reverse flow that could lead to contamination. By preventing the backflow of water, they effectively avert the risk of polluted water infiltrating the local supply.

These assemblies are particularly vital in areas where health hazards are a concern. At Backflow Depot, we proudly offer a comprehensive selection of backflow assemblies from renowned manufacturers like Ames, Apollo, Deringer, Febco, Watts, Wilkins, and more. To delve deeper into the components crafted by our featured manufacturers, we invite you to explore the provided links.

Sizes Available

Ames
Apollo
Deringer
Febco
Watts
Wilkins

*Click on the tabs to see parts list.

Manufacturers

  • 1/2" - LF2000B
  • 1/2" - FL4000B
  • 3/4" - 007M1 Bypass
  • 3/4" - LF2000B
  • 3/4" - LF4000B
  • 1" - LF2000B
  • 1" - LF4000B
  • 1 1/4" - LF2000B
  • 1 1/4" - LF4000B
  • 1 1/2" - LF2000B
  • 1 1/2" - LF4000B
  • 2" - 3000BM1
  • 2" - LF2000B
  • 2" - LF4000B

  • 1/2" - DC-4ALF
  • 1/2" - PVB-4A
  • 1/2" - RP-4ALF
  • 3/4" - DC-4ALF
  • 3/4" - PVB-4A
  • 3/4" - PVB-4ALF
  • 3/4" - RP-4ALF
  • 1" - DC-4ALF
  • 1" - PVB-4A
  • 1" - PVB-4ALF
  • 1" - RP-4ALF
  • 1 1/4" - DC-4ALF
  • 1 1/4" - PVB-4A
  • 1 1/4" - RP-4ALF
  • 1 1/2" - DC-4ALF
  • 1 1/2" - PVB-4A
  • 1 1/2" - RP-4ALF
  • 2" - DC-4ALF
  • 2" - PVB-4A
  • 2" - RP-4ALF
  • 2 1/2" - 4S-100
  • 2 1/2" - 4S-600
  • 2 1/2" - 4SG-100
  • 2 1/2" - 4SG-600
  • 2 1/2" - DC-4ALF
  • 2 1/2" - DC-4ANLF
  • 2 1/2" - DCDA-4ALF
  • 2 1/2" - DCDA-4ANLF
  • 2 1/2" - RP-4ALF
  • 2 1/2" - RP-4ANLF
  • 2 1/2" - RPDA-4ALF
  • 2 1/2" - RPDA-4ANLF
  • 3" - 4S-100
  • 3" - 4S-600
  • 3" - 4SG-100
  • 3" - 4SG-600
  • 3" - DC-4ALF
  • 3" - DC-4ANLF
  • 3" - DCDA-4ALF
  • 3" - DCDA-4ANLF
  • 3" - RP-4ALF
  • 3" - RP-4ANLF
  • 3" - RPDA-4ALF
  • 3" - RPDA-4ANLF
  • 4" - 4S-100
  • 4" - 4S-600
  • 4" - 4SG-100
  • 4" - 4SG-600
  • 4" - DC-4ALF
  • 4" - DC-4ANLF
  • 4" - DCDA-4ALF
  • 4" - DCDA-4ANLF
  • 4" - RP-4ALF
  • 4" - RP-4ANLF
  • 4" - RPDA-4ALF
  • 4" - RPDA-4ANLF
  • 6" - 4S-100
  • 6" - 4S-600
  • 6" - 4SG-100
  • 6" - 4SG-600
  • 6" - DC-4ALF
  • 6" - DC-4ANLF
  • 6" - DCDA-4ALF
  • 6" - DCDA-4ANLF
  • 6" - RP-4ALF
  • 6" - RP-4ANLF
  • 6" - RPDA-4ALF
  • 6" - RPDA-4ANLF
  • 8" - 4S-100
  • 8" - 4S-600
  • 8" - 4SG-100
  • 8" - 4SG-600
  • 8" - DC-4ALF
  • 8" - DC-4ANLF
  • 8" - DCDA-4ALF
  • 8" - DCDA-4ANLF
  • 8" - RP-4ALF
  • 8" - RP-4ANLF
  • 8" - RPDA-4ALF
  • 8" - RPDA-4ANLF
  • 10" - 4S-100
  • 10" - 4S-600
  • 10" - DC-4ALF
  • 10" - DC-4ANLF
  • 10" - DCDA-4ALF
  • 10" - DCDA-4ANLF
  • 10" - RP-4ALF
  • 10" - RP-4ANLF
  • 10" - RPDA-4ALF
  • 10" - RPDA-4ANLF
  • 12" - DC-4ALF
  • 12" - DC-4ANLF
  • 12" - DCDA-4ALF
  • 12" - DCDA-4ANLF
  • 12" - RP-4ALF
  • 12" - RP-4ANLF
  • 12" - RPDA-4ALF
  • 12" - RPDA-4ANLF

  • 1/2" - CV-5000 Bypass
  • 2" - Model 20
  • 2" - Model 30
  • 2" - Model 40
  • 2" - Model 50
  • 2 1/2" - Model 20
  • 2 1/2" - Model 20G
  • 2 1/2" - Model 30
  • 2 1/2" - Model 30G
  • 2 1/2" - Model 40
  • 2 1/2" - Model 40G
  • 2 1/2" - Model 50
  • 2 1/2" - Model 50G
  • 3" - Model 20
  • 3" - Model 20G
  • 3" - Model 30
  • 3" - Model 30G
  • 3" - Model 40
  • 3" - Model 40G
  • 3" - Model 50
  • 3" - Model 50G
  • 4" - Model 20
  • 4" - Model 20G
  • 4" - Model 30
  • 4" - Model 30G
  • 4" - Model 40
  • 4" - Model 40G
  • 4" - Model 50
  • 4" - Model 50G
  • 6" - Model 20
  • 6" - Model 20G
  • 6" - Model 30
  • 6" - Model 30G
  • 6" - Model 40GX
  • 6" - Model 40X
  • 6" - Model 50GX
  • 6" - Model 50X
  • 8" - Model 20
  • 8" - Model 20G
  • 8" - Model 30
  • 8" - Model 30G
  • 8" - Model 40
  • 8" - Model 40G
  • 8" - Model 50
  • 8" - Model 50G

  • 1/2" - 765
  • 1/2" - LF850
  • 1/2" - LF860
  • 3/4" - 765
  • 3/4" - 805YB
  • 3/4" - LF825Y
  • 3/4" - LF825YA
  • 3/4" - LF850
  • 3/4" - LF860
  • 1" - 765
  • 1" - LF825Y
  • 1" - LF825YA
  • 1" - LF850
  • 1" - LF860
  • 1 1/4" - 765
  • 1 1/4" - LF825Y
  • 1 1/4" - LF850
  • 1 1/4" - LF860
  • 1 1/2" - 765
  • 1 1/2" - LF825Y
  • 1 1/2" - LF825YA
  • 1 1/2" - LF850
  • 1 1/2" - LF860
  • 2" - 765
  • 2" - LF825Y
  • 2" - LF825YA
  • 2" - LF850
  • 2" - LF860
  • 2 1/2" - LF850
  • 2 1/2" - LF856
  • 2 1/2" - LF860
  • 2 1/2" - LF866
  • 2 1/2" - LF870V
  • 2 1/2" - LF876V
  • 2 1/2" - LF880V
  • 2 1/2" - LF886V
  • 3" - LF850
  • 3" - LF856
  • 3" - LF860
  • 3" - LF866
  • 3" - LF870V
  • 3" - LF876V
  • 3" - LF880V
  • 3" - LF886V
  • 4" - LF850
  • 4" - LF856
  • 4" - LF860
  • 4" - LF866
  • 4" - LF870V
  • 4" - LF876V
  • 4" - LF880V
  • 4" - LF886V
  • 6" - LF850
  • 6" - LF856
  • 6" - LF860
  • 6" - LF866
  • 6" - LF870V
  • 6" - LF876V
  • 6" - LF880V
  • 6" - LF886V
  • 8" - LF850
  • 8" - LF856
  • 8" - LF860
  • 8" - LF866
  • 8" - LF870V
  • 8" - LF876V
  • 8" - LF880V
  • 8" - LF886V
  • 10" - LF850
  • 10" - LF856
  • 10" - LF860
  • 10" - LF866
  • 10" - LF870V
  • 10" - LF876V
  • 10" - LF880V
  • 10" - LF886V

  • 1/4" - 009
  • 1/4" - LF009
  • 3/8" - 009
  • 3/8" - LF009
  • 1/2" - 007
  • 1/2" - 009
  • 1/2" - 800M4
  • 1/2" - LF007
  • 1/2" - LF009
  • 1/2" - LF719
  • 1/2" - LF800M4
  • 1/2" - LF919
  • 3/4" - 007
  • 3/4" - 007M1
  • 3/4" - 007M2
  • 3/4" - 007M3
  • 3/4" - 009
  • 3/4" - 009M2
  • 3/4" - 009M3
  • 3/4" - 800M4
  • 3/4" - LF007M3
  • 3/4" - LF009M3
  • 3/4" - LF719
  • 3/4" - LF800M4
  • 3/4" - LF909
  • 3/4" - LF919
  • 1" - 007
  • 1" - 007M1
  • 1" - 009
  • 1" - 009M2
  • 1" - 800M4
  • 1" - LF007M1
  • 1" - LF007M2
  • 1" - LF719
  • 1" - LF800M4
  • 1" - LF909
  • 1" - LF919
  • 1 1/4" - 007M2
  • 1 1/4" - 009
  • 1 1/4" - 009M2
  • 1 1/4" - 800M4
  • 1 1/4" - LF007M2
  • 1 1/4" - LF009M2
  • 1 1/4" - LF719
  • 1 1/4" - LF800M4
  • 1 1/4" - LF909
  • 1 1/4" - LF919
  • 1 1/2" - 007
  • 1 1/2" - 007M1
  • 1 1/2" - 007M2
  • 1 1/2" - 009
  • 1 1/2" - 009M2
  • 1 1/2" - 800M4
  • 1 1/2" - LF007M2
  • 1 1/2" - LF009M2
  • 1 1/2" - LF719
  • 1 1/2" - LF800M4
  • 1 1/2" - LF909
  • 1 1/2" - LF919
  • 2" - 007
  • 2" - 007M1
  • 2" - 007M1DCDA
  • 2" - 009
  • 2" - 009M2
  • 2" - 800M4
  • 2" - LF007M1
  • 2" - LF009M2
  • 2" - LF719
  • 2" - LF800M4
  • 2" - LF909
  • 2" - LF919
  • 2 1/2" - 007
  • 2 1/2" - 007DCDA
  • 2 1/2" - 009
  • 2 1/2" - 757
  • 2 1/2" - 757DCDA
  • 2 1/2" - 774
  • 2 1/2" - 774DCDA
  • 2 1/2" - 909RPDA
  • 2 1/2" - 957
  • 2 1/2" - 957RPDA
  • 2 1/2" - 994
  • 2 1/2" - 994RPDA
  • 2 1/2" - LF007
  • 2 1/2" - LF009
  • 2 1/2" - LF709
  • 2 1/2" - LF757DCDA
  • 2 1/2" - LF909
  • 2 1/2" - LF957RPDA
  • 3" - 007
  • 3" - 007DCDA
  • 3" - 009
  • 3" - 709DCDA
  • 3" - 757
  • 3" - 757DCDA
  • 3" - 774
  • 3" - 774DCDA
  • 3" - 909RPDA
  • 3" - 957
  • 3" - 957RPDA
  • 3" - 994
  • 3" - 994RPDA
  • 3" - LF007
  • 3" - LF009
  • 3" - LF709
  • 3" - LF757DCDA
  • 3" - LF909
  • 3" - LF957RPDA
  • 4" - 709DCDA
  • 4" - 757
  • 4" - 757DCDA
  • 4" - 774
  • 4" - 774DCDA
  • 4" - 909RPDA
  • 4" - 957
  • 4" - 957RPDA
  • 4" - 994
  • 4" - 994RPDA
  • 4" - LF709
  • 4" - LF757DCDA
  • 4" - LF909
  • 4" - LF957RPDA
  • 6" - 709DCDA
  • 6" - 757
  • 6" - 757DCDA
  • 6" - 774
  • 6" - 774DCDA
  • 6" - 909RPDA
  • 6" - 957
  • 6" - 957RPDA
  • 6" - 994
  • 6" - 994RPDA
  • 6" - LF709
  • 6" - LF757DCDA
  • 6" - LF909
  • 6" - LF957RPDA
  • 8" - 709DCDA
  • 8" - 757
  • 8" - 757DCDA
  • 8" - 774
  • 8" - 774DCDA
  • 8" - 909RPDA
  • 8" - 957
  • 8" - 957RPDA
  • 8" - 994
  • 8" - LF709
  • 8" - LF757DCDA
  • 8" - LF909M1
  • 8" - LF957RPDA
  • 10" - 774DCDA
  • 10" - 909RPDA
  • 10" - 957
  • 10" - 957RPDA
  • 10" - 994
  • 10" - LF709
  • 10" - LF757DCDA
  • 10" - LF909M1
  • 10" - LF957RPDA
  • 12" - 774
  • 12" - 774DCDA

  • 1/4" - 975XL
  • 1/4" - 975XL2
  • 3/8" - 460
  • 3/8" - 460XL
  • 3/8" - 975XL
  • 3/8" - 975XL2
  • 1/2" - 375
  • 1/2" - 375XL
  • 1/2" - 460
  • 1/2" - 460XL
  • 1/2" - 720A
  • 1/2" - 975XL
  • 1/2" - 975XL2
  • 1/2" - 975XL3
  • 3/4" - 350
  • 3/4" - 350XL
  • 3/4" - 375
  • 3/4" - 375XL
  • 3/4" - 420XL
  • 3/4" - 460
  • 3/4" - 460XL
  • 3/4" - 710
  • 3/4" - 720A
  • 3/4" - 950XL3
  • 3/4" - 950XLT2
  • 3/4" - 975XL
  • 3/4" - 975XL2
  • 3/4" - 975XL3
  • 1" - 350
  • 1" - 350XL
  • 1" - 375
  • 1" - 375XL
  • 1" - 420XL
  • 1" - 460
  • 1" - 460XL
  • 1" - 710
  • 1" - 720A
  • 1" - 950XL3
  • 1" - 950XLT2
  • 1" - 975XL
  • 1" - 975XL2
  • 1" - 975XL3
  • 1 1/4" - 350
  • 1 1/4" - 350XL
  • 1 1/4" - 375
  • 1 1/4" - 375XL
  • 1 1/4" - 720A
  • 1 1/4" - 950XL3
  • 1 1/4" - 950XLT2
  • 1 1/4" - 975XL
  • 1 1/4" - 975XL2
  • 1 1/4" - 975XL3
  • 1 1/2" - 350
  • 1 1/2" - 350XL
  • 1 1/2" - 375
  • 1 1/2" - 375XL
  • 1 1/2" - 720A
  • 1 1/2" - 950XL3
  • 1 1/2" - 950XLT2
  • 1 1/2" - 975XL
  • 1 1/2" - 975XL2
  • 1 1/2" - 975XL3
  • 2" - 350
  • 2" - 350XL
  • 2" - 375
  • 2" - 375XL
  • 2" - 720A
  • 2" - 950XL3
  • 2" - 950XLT2
  • 2" - 950XLTDA
  • 2" - 975XL
  • 2" - 975XL2
  • 2" - 75XL3
  • 2 1/2" - 350
  • 2 1/2" - 350A
  • 2 1/2" - 350ADA
  • 2 1/2" - 350AST
  • 2 1/2" - 350ASTDA
  • 2 1/2" - 350DA
  • 2 1/2" - 375
  • 2 1/2" - 375A
  • 2 1/2" - 375ADA
  • 2 1/2" - 375AST
  • 2 1/2" - 375ASTDA
  • 2 1/2" - 375DA
  • 2 1/2" - 450
  • 2 1/2" - 475(or 475V)
  • 3" - 350
  • 3" - 350A
  • 3" - 350ADA
  • 3" - 350AST
  • 3" - 350ASTDA
  • 3" - 350DA
  • 3" - 375
  • 3" - 375A
  • 3" - 375ADA
  • 3" - 375AST
  • 3" - 375ASTDA
  • 3" - 375DA
  • 3" - 450
  • 3" - 475(or 475V)
  • 4" - 350
  • 4" - 350A
  • 4" - 350ADA
  • 4" - 350AST
  • 4" - 350ASTDA
  • 4" - 350DA
  • 4" - 375
  • 4" - 375A
  • 4" - 375ADA
  • 4" - 375AST
  • 4" - 375ASTDA
  • 4" - 375DA
  • 4" - 450
  • 4" - 450DA
  • 4" - 450ST
  • 4" - 450STDA
  • 4" - 475(or 475V)
  • 4" - 475DA(or 475DAV)
  • 4" - 475ST(or 475STV)
  • 4" - 475STDA(or 475STDAV)
  • 6" - 350
  • 6" - 350A
  • 6" - 350ADA
  • 6" - 350AST
  • 6" - 350ASTDA
  • 6" - 350DA
  • 6" - 375
  • 6" - 375A
  • 6" - 375ADA
  • 6" - 375AST
  • 6" - 375ASTDA
  • 6" - 375DA
  • 6" - 450
  • 6" - 450DA
  • 6" - 450ST
  • 6" - 450STDA
  • 6" - 475(or 475V)
  • 6" - 475DA(or 475DAV)
  • 6" - 475ST(or 475STV)
  • 6" - 475STDA(or 475STDAV)
  • 8" - 350
  • 8" - 350A
  • 8" - 350ADA
  • 8" - 350AST
  • 8" - 350ASTDA
  • 8" - 350DA
  • 8" - 375
  • 8" - 375A
  • 8" - 375ADA
  • 8" - 375AST
  • 8" - 375ASTDA
  • 8" - 375DA
  • 8" - 450
  • 8" - 450DA
  • 8" - 450ST
  • 8" - 450STDA
  • 8" - 475(or 475V)
  • 8" - 475DA(or 475DAV)
  • 8" - 475ST(or 475STV)
  • 8" - 475STDA(or 475STDAV)
  • 10" - 350
  • 10" - 350A
  • 10" - 350ADA
  • 10" - 350AST
  • 10" - 350ASTDA
  • 10" - 350DA
  • 10" - 375
  • 10" - 375A
  • 10" - 375ADA
  • 10" - 375AST
  • 10" - 375ASTDA
  • 10" - 375DA
  • 10" - 450
  • 10" - 450DA
  • 10" - 450ST
  • 10" - 450STDA
  • 10" - 475(or 475V)
  • 10" - 475DA(or 475DAV)
  • 10" - 475ST(or 475STV)
  • 10" - 475STDA(or 475STDAV)
  • 12" - 350
  • 12" - 350DA